Circulatory & Excretory System MCQ Quiz – Part 5
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This Circulatory & Excretory System MCQ Quiz helps aspirants revise important concepts related to the structure and functions of the human circulatory and excretory systems, which are frequently asked in competitive exams. Regular practice of these MCQs improves conceptual understanding and helps candidates answer biology questions quickly and accurately.
GK Series – Biology – Circulatory & Excretory System MCQ Quiz |
|
| Subject | Biology |
| Chapter | Circulatory & Excretory System |
| Part | 5 |
| Questions | 26 |
Who Should Attempt This Circulatory & Excretory System MCQ Quiz?
This Circulatory & Excretory System MCQ Quiz helps aspirants revise important concepts related to the structure and functions of the human circulatory and excretory systems, which are frequently asked in competitive exams. Regular practice of these MCQs improves conceptual understanding and helps candidates answer biology questions quickly and accurately.
Topics Covered in This Circulatory & Excretory System MCQ Quiz
This quiz includes MCQs based on important topics such as heart, blood, blood vessels, circulation of blood, components of blood, kidneys, nephrons, urine formation, and functions of the excretory system, along with other fundamental concepts related to human circulation and excretion.
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Question 1 of 26
1. Question
Bilirubin is a pigment formed from the breakdown of
Correct
➤ Bilirubin is formed from the breakdown of hemoglobin in RBCs.
➤ It is excreted through bile and gives feces its color.Incorrect
➤ Bilirubin is formed from the breakdown of hemoglobin in RBCs.
➤ It is excreted through bile and gives feces its color. -
Question 2 of 26
2. Question
The brown color of feces is mainly due to
Correct
➤ Bilirubin and its derivatives give feces its brown color.
➤ It is a waste product of RBC breakdown.Incorrect
➤ Bilirubin and its derivatives give feces its brown color.
➤ It is a waste product of RBC breakdown. -
Question 3 of 26
3. Question
Which organ removes carbon dioxide from the body?
Correct
➤ Lungs remove carbon dioxide during exhalation.
➤ CO₂ is a waste product of respiration.Incorrect
➤ Lungs remove carbon dioxide during exhalation.
➤ CO₂ is a waste product of respiration. -
Question 4 of 26
4. Question
Sweat glands help in excretion of
Correct
➤ Sweat glands excrete water, salts and small amounts of urea.
➤ They also help in temperature regulation.Incorrect
➤ Sweat glands excrete water, salts and small amounts of urea.
➤ They also help in temperature regulation. -
Question 5 of 26
5. Question
Sebaceous glands mainly secrete
Correct
➤ Sebaceous glands secrete sebum (oil).
➤ It helps in lubricating skin and hair.Incorrect
➤ Sebaceous glands secrete sebum (oil).
➤ It helps in lubricating skin and hair. -
Question 6 of 26
6. Question
The liver helps in excretion by
Correct
➤ Liver produces bile pigments like bilirubin.
➤ These are excreted through digestive system.Incorrect
➤ Liver produces bile pigments like bilirubin.
➤ These are excreted through digestive system. -
Question 7 of 26
7. Question
Excretion of nitrogenous waste as ammonia is called
Correct
➤ Ammonotelism is excretion of waste in the form of ammonia.
➤ Example: aquatic animals like fish.Incorrect
➤ Ammonotelism is excretion of waste in the form of ammonia.
➤ Example: aquatic animals like fish. -
Question 8 of 26
8. Question
Excretion of nitrogenous waste as urea is called
Correct
➤ Ureotelism is excretion in the form of urea.
➤ Example: humans and mammals.Incorrect
➤ Ureotelism is excretion in the form of urea.
➤ Example: humans and mammals. -
Question 9 of 26
9. Question
Excretion of nitrogenous waste as uric acid is called
Correct
➤ Uricotelism is excretion of uric acid.
➤ Example: birds and reptiles.Incorrect
➤ Uricotelism is excretion of uric acid.
➤ Example: birds and reptiles. -
Question 10 of 26
10. Question
Which of the following animals is ammonotelic?
Correct
➤ Fish are ammonotelic animals.
➤ They excrete nitrogenous waste as ammonia.Incorrect
➤ Fish are ammonotelic animals.
➤ They excrete nitrogenous waste as ammonia. -
Question 11 of 26
11. Question
Which of the following animals is ureotelic?
Correct
➤ Humans are ureotelic animals.
➤ They excrete nitrogenous waste mainly as urea.Incorrect
➤ Humans are ureotelic animals.
➤ They excrete nitrogenous waste mainly as urea. -
Question 12 of 26
12. Question
Which of the following animals is uricotelic?
Correct
➤ Birds are uricotelic animals.
➤ They excrete waste as uric acid to conserve water.Incorrect
➤ Birds are uricotelic animals.
➤ They excrete waste as uric acid to conserve water. -
Question 13 of 26
13. Question
The maintenance of a stable internal environment is called
Correct
➤ Homeostasis maintains stable internal conditions.
➤ It regulates temperature, pH and fluid balance.Incorrect
➤ Homeostasis maintains stable internal conditions.
➤ It regulates temperature, pH and fluid balance. -
Question 14 of 26
14. Question
Which hormone regulates water reabsorption in kidney?
Correct
➤ ADH (Antidiuretic Hormone) controls water reabsorption.
➤ It helps maintain water balance in the body.Incorrect
➤ ADH (Antidiuretic Hormone) controls water reabsorption.
➤ It helps maintain water balance in the body. -
Question 15 of 26
15. Question
The loop of Henle mainly helps in
Correct
➤ Loop of Henle concentrates urine.
➤ It helps maintain water and salt balance.Incorrect
➤ Loop of Henle concentrates urine.
➤ It helps maintain water and salt balance. -
Question 16 of 26
16. Question
Coronary circulation supplies blood to the
Correct
➤ Coronary circulation supplies blood to heart muscles.
➤ It is essential for heart functioning.Incorrect
➤ Coronary circulation supplies blood to heart muscles.
➤ It is essential for heart functioning. -
Question 17 of 26
17. Question
The lymphatic system mainly helps in
Correct
➤ Lymphatic system supports immunity.
➤ It also helps in fluid balance and transport of fats.Incorrect
➤ Lymphatic system supports immunity.
➤ It also helps in fluid balance and transport of fats. -
Question 18 of 26
18. Question
Lymph is a fluid similar to
Correct
➤ Lymph is similar to blood plasma but lacks RBCs.
➤ It transports lymphocytes and nutrients.Incorrect
➤ Lymph is similar to blood plasma but lacks RBCs.
➤ It transports lymphocytes and nutrients. -
Question 19 of 26
19. Question
The main function of lymphocytes is to
Correct
➤ Lymphocytes are a type of WBC involved in immunity.
➤ They protect the body from infections and diseases.Incorrect
➤ Lymphocytes are a type of WBC involved in immunity.
➤ They protect the body from infections and diseases. -
Question 20 of 26
20. Question
In a closed circulatory system, blood flows
Correct
➤ In closed circulation, blood flows within vessels.
➤ Example: Humans and other vertebrates.Incorrect
➤ In closed circulation, blood flows within vessels.
➤ Example: Humans and other vertebrates. -
Question 21 of 26
21. Question
Electrolyte balance in the body is mainly regulated by
Correct
➤ Kidneys regulate electrolyte balance (Na⁺, K⁺, etc.).
➤ This is essential for normal body functioning.Incorrect
➤ Kidneys regulate electrolyte balance (Na⁺, K⁺, etc.).
➤ This is essential for normal body functioning. -
Question 22 of 26
22. Question
Besides excretion, kidneys also help in
Correct
➤ Kidneys regulate blood volume and blood pressure.
➤ They maintain fluid balance in the body.Incorrect
➤ Kidneys regulate blood volume and blood pressure.
➤ They maintain fluid balance in the body. -
Question 23 of 26
23. Question
Blood helps in transport of
Correct
➤ Blood transports oxygen, nutrients, hormones and wastes.
➤ It plays a key role in coordination and homeostasis.Incorrect
➤ Blood transports oxygen, nutrients, hormones and wastes.
➤ It plays a key role in coordination and homeostasis. -
Question 24 of 26
24. Question
The average weight of a human kidney is
Correct
➤ A healthy human kidney weighs about 120–170 grams.
➤ It is bean-shaped and about 10–12 cm long.Incorrect
➤ A healthy human kidney weighs about 120–170 grams.
➤ It is bean-shaped and about 10–12 cm long. -
Question 25 of 26
25. Question
Match the following leukocytes with their functions:
Correct
➤ Monocytes perform phagocytosis (engulf pathogens).
➤ Basophils release heparin and histamine.
➤ Lymphocytes produce antibodies for immunity.Incorrect
➤ Monocytes perform phagocytosis (engulf pathogens).
➤ Basophils release heparin and histamine.
➤ Lymphocytes produce antibodies for immunity. -
Question 26 of 26
26. Question
ADH mainly acts on which part of nephron?
Correct
➤ ADH acts on collecting duct.
➤ It increases water reabsorption and reduces urine volume.Incorrect
➤ ADH acts on collecting duct.
➤ It increases water reabsorption and reduces urine volume.